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3 years ago

What is 2 times 2? I am 7 years old and dont know 2 times two

Mathematics

2 answers:

trapecia [35]3 years ago

8 0

Your answer to 2×2 is this answer
2×2=4

cupoosta [38]3 years ago

7 0

the answer is 4 kiddo
:)

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Find dy/dx if y =x^3+5x+2/x²-1

stiks02 [169]

Differentiate using the Quotient Rule –

$\qquad$ $\pink{\twoheadrightarrow \sf \dfrac{d}{dx} \bigg[\dfrac{f(x)}{g(x)} \bigg]= \dfrac{ g(x)\:\dfrac{d}{dx}\bigg[f(x)\bigg] -f(x)\dfrac{d}{dx}\:\bigg[g(x)\bigg]}{g(x)^2}}\\$

According to the given question, we have –

f(x) = x^3+5x+2
g(x) = x^2-1

Let's solve it!

$\qquad$ $\green{\twoheadrightarrow \bf \dfrac{d}{dx}\bigg[ \dfrac{x^3+5x+2 }{x^2-1}\bigg]} \\$

$\qquad$ $\twoheadrightarrow \sf \dfrac{(x^2-1) \dfrac{d}{dx}(x^3+5x+2) - ( x^3+5x+2) \dfrac{d}{dx}(x^2-1)}{(x^2-1)^2 }\\$

$\qquad$ $\twoheadrightarrow \sf \dfrac{(x^2-1)(3x^2+5) - ( x^3+5x+2) 2x}{(x^2-1)^2 }\\$

$\qquad$ $\pink{\sf \because \dfrac{d}{dx} x^n = nx^{n-1} }\\$

$\qquad$ $\twoheadrightarrow \sf \dfrac{3x^4+5x^2-3x^2-5-(2x^4+10x^2+4x)}{(x^2-1)^2 }\\$

$\qquad$ $\twoheadrightarrow \sf \dfrac{3x^4+5x^2-3x^2-5-2x^4-10x^2-4x}{(x^2-1)^2 }\\$

$\qquad$ $\green{\twoheadrightarrow \bf \dfrac{x^4-8x^2-4x-5}{(x^2-1)^2 }}\\$

$\qquad$ $\pink{\therefore \bf{\green{\underline{\underline{\dfrac{d}{dx} \dfrac{x^3+5x+2 }{x^2-1}} = \dfrac{x^4-8x^2-4x-5}{(x^2-1)^2 }}}}}\\\\$

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2 years ago

Which expression is equivalent to 3(m - 3) + 4? ОЗm + 1 ОЗm – 5 О Зm + 13 ОЗm – 3

Katyanochek1 [597]

Answer:

3m+13

Step-by-step explanation:

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3 years ago

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3/2b+1/4=5/8 What is it? Please help

Vedmedyk [2.9K]

Answer:

3.2b=5.8-1.4 3/2b=4/4 so b=3.2/4.4

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3 years ago

Is a prime number is a prime number 61 or 21

goldenfox [79]

61 is a prime number.

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2 years ago

One minus the product of four and a number x

Alex17521 [72]

Answer:

$1-4x$

Step-by-step explanation:

A product of two numbers is the result we get from multiplying them together. The product of 4 and x would then be $4\times x$ , which we can rewrite as $4x$ . We're then told by the statement "one minus the product..." that we'll be taking this $4x$ away from 1, giving us the answer $1-4x$ .

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3 years ago

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